Was the "Deep Water Horizon" Sunk by North Korea??

Built by South Korea: http://www.deepwater.com/fw/main/Deepwater-Horizon-56C17.html?LayoutID=17

Sunk by North Korean attack? http://www.wral.com/golo/blogpost/7523004/

Related article on this blog: http://arklite.blogspot.com/2010/05/korean-penninsula-heating-up-once-again.html